IUPAC:(2S,3S,4R,6R,8S,11S,13R,15R)-13,18-dihydroxy-6-methyl-2-(2-oxopropyl)-16-oxatetracyclo[13.2.2.0^{3,11}.0^{4,8}]nonadeca-1(18),9-diene-7,17-dione
IUPAC:(2S,3S,4R,6R,8S,11S,13R,15R)-13,18-dihydroxy-6-methyl-2-(2-oxopropyl)-16-oxatetracyclo[13.2.2.0^{3,11}.0^{4,8}]nonadeca-1(18),9-diene-7,17-dione